Another great Help guide put together by NEPHRON From PSPcrasy forums

Basic Starter kit(includes capture and irsmp3 for the seplugin folder)
Download here: Starter kit
To use:
a. Follow the steps for the other guides except the one for capture.prx and irsmp3.prx

PRX Manager(places them in the folder when you click the .prx file)
Download here: PRX. Manager

Flash0 prx(I am not resposible if you brick your PSP)
1. Reboot your PSP by selecting Network Updates
a. Download this file: Flash 0 PRX
b. Access Recovery
c. Click 'advanced'
d. click 'Toggle USB (flash0)'. A window on your computer will now pop up
e. Open the 'vsh' folder
f. Open the 'nodule' folder
g. Uncompress the file and paste the 2 .prx files into the 'nodule' folder and overwrite the files when it asks you to
h. Exit recovery
To use:
1. Go to your Network Update icon
a. To shut down your PSP you just click it
b. To reboot click and hold L
c. To reboot into recovery click+hold L-trigger. As soon as the screen is black hold R-trigger

SEPLUGINS prx(s)-does not brick your PSP!!
1. capture.prx(enable through recovery)-takes pictures of games
a. Download this file: Capture prx
b. Uncompress and paste into seplugins folder in root
To use:
1. Screen capture= L-trigger and Screen brighness
2. Gif video
a. start= R-trigger and Screen brighness
b. stop= select
c. *NEW* L-trigger+R-trigger+Screen brightness at the same time you'll get a full screen gif video of your xmb
3. If it does not work reboot PSP and try again
2. irsmp3.prx(enable through recovery)-play mp3s in games
a. Download this file: irsmp3.prx
b. Uncompress and paste into seplugins folder in root
To use:
1. put the music in PSP>MUSIC
2. Hit the music note and square to bring up display,then hit music note and L trigger,to start playing songs

3. brightness.prx(enabled through recovery)-enable the 4th brightness setting ***3.10 only apparently***
a. Download this file: brightness.prx
b. Uncompress and paste into seplugins folder in root
To use:
1. Enable and it will work. Push the brightness button

4. Battery.prx(enabled through revovery)-check the battery percentage/time left of your PSP
a. Download this file: Battery.prx
b. Uncompress and paste into seplugins folder in root
To use:
1. Enable through recovery and it will automatically show you the time left and the percentage of battery left
5. HideMov Beta(enable through recovery)-hides movies that you don't want people to see
a. Download this file: HideMov Beta
b. Uncompress and paste into seplugins folder in root
To use:
1. Home + L-trigger is show/unlock video files
2. Home + R-trigger is hide/lock video files
6. Pops.prx(enable through recovery)-enables 3.10 OE and higher, to load every pops from 3.00 to 3.11
a. Download this file: Pops.prx
b. Uncompress and paste into seplugins folder in root
To use:
1. Use the read-me. Tells you exactly what to do
7. VSH Analog Revision B(enable through recovery)-This plugin allows use of the analog stick for movement in the VSH. Analog will function as D-pad, and D-pad as analog
a. Download this file: VSH Analog Revision B
b. Uncompress and paste into seplugins folder in root
To use:
1. press the vol+ and vol- buttons at the same time to enable/disable it
8. USB Mount(enable through recovery)- Sorta like USBmod but does not write to flash0
a. Download this file: USB Mount
b. Umcompress and paste into seplugins folder in root
To use:
1. Read the readme.theres something there that I can't say here..

9. Quickpower 0.91(enable through recovery)- assists you with 'power' related issues.
a. Download this file: Quickpower 0.91
b. Uncompress and paste into seplugins folder in root

To use:
1. Reboot: HOME & START
2. Immediately Power off: HOME & SELECT (Bypasses the 5 second wait you usually have when powering your PSP off.)
3. Brightness -: HOME & L
4. A virtual pet game focused on genetics and breeding. Brightness +: HOME & R (incl. the 4th lightness)
10. Quickusb(enable through recovery)-This prx lets you turn on/off your usb connection in the xmb at any time, so you dont need to go to the usb connection icon.

a. Download this file: Quickusb
b. Uncompress and paste into seplugins folder in root

To use:
1. Left + Right shoulder buttons (at same time): turn usb on/off
*note* This prx cant work in a game, so don't add it to ur game.txt

11. VSHPong(enable through recovery)-play pong on your xmb and during games
a. Download this file: VSHPong
b. Uncompress and paste into seplugins folder in root

To use:
1. Just push up and down on the analog to control you paddle and have fun! Push start and right trigger to toggle between u playing and artifical Inteligence.

12. SVC player-Allows you to play any .gif videos you have on your psp
a. Download this file: SVC player
b. Uncompress and paste into GAME150

To use:
1. See readme for instructions.

Flash0/seplugins(combination of both)
1. USB Mod for 3.10oe-a2 (enabled through recovery)-stream files from your PC via the USB
a. FOLLOW THE READ-ME'S INSTRUCTIONS
b. Download here: USB Mod 3.10oe-a2
2. USB Mod for 3.03oe-c (enabled through recovery)-stream files from your PC via the USB
a. FOLLOW THE READ-ME'S INSTRUCTIONS
b. Download the files here: USB Mod for 3.03oe-c
3. USB Mod for 3.10oe-a (enabled through recovery)-stream files from your PC via the USB
a. FOLLOW THE READ-ME'S INSTRUCTIONS
b. Download the files here: USB Mod for 3.10oe-a