Read the kit instructions first
Make sure you have a large enough pot even for partial boils
control fermentation temp, use your clothes hamper
keep opening it too see what it's doing
Listen to your friends (unless they are brewers)
bother with a secondary
People still stereotype homebrew, you'll hear a lot of "yeah I tried that once...". You can and will produce a fine product if you follow the instructions and read a bit here in the extract forum.