Here's links to help resolve issues you may have.
CM7 Common issues AND FIXES. LOOK HERE before asking! - xda-developers
Cm7 faq
[Android]ClockworkMod Recovery not installing - xda-developers
[VIDEO] Idiots Guide - How to Install Cyanogenmod 7 Android Alpha on HP Touchpad - xda-developers
[GUIDE] Re-install a CM7 via CWM..
How to Install Google Market & Apps on CM7 Alpha TouchPad
GPS from D2 on TP working!
Fixed Market Filtering (also see page 1)
Missing Market Apps Installer
(2nd chance to install Market apps like YouTube, Maps, Facebook, etc)
Wifi *UPDATED WITH WORKAROUNDS* & check this post too: link
[HOW-TO]Fixing USB problems with ADB
SOD fix from Dalingrin
(Fix for sleep of death problems with Alpha 2.1 build)
Factory reset
(How to remove apps and personalization to both CM7 and webOS to stock)