95 Integra with VSS problems + more...need help!

Was wondering if anyone knows how to replace the VSS in an auto 95 integra LS. Was wondering if I could do it on my own or whether it'd be better to have a mechanic do it. Also, finally learned how to read the OBD I port from the Haynes manual. Ran several errors including the VSS and some others. For now, I just need the VSS so my speedo will work. Don't really want to get a ticket for speeding, so any help will be greatly appreciated. I bought this car about a week ago, only to learn it has all of these problems. It has a B18 A1 motor swap in it if that helps.