Hi and welcome to the forum.
The best way to begin is to start a project thread. This will allow all of the posts - questions and answers - to be in one place on the forum. Rule number one is always to take as many digital photos as you can BEFORE you start stripping the bike down.
Getting hold of a workshop manual is a must. Copyright laws do not allow the posting of links etc on the forum.
Obviously a good selection of tools helps and use Plusgas for unseizing things, not WD40.
Try and find some reliable sources for cross referencing parts - old bike parts are often shared across several models and it helps when searching for bits. Remember that US ebay often has parts not on UK ebay so log into the .com site and have a look.
Identify what parts on the bike are rare. This means that you can keep a search for these parts going, just in case, and it will help you to remember which parts you need to protect in case you have to destroy a part in the strip down.
Good luck.
Identify which parts