For joinery, you might want to build a bow saw, or get a small dozuki, or a tenon saw, if you find one. The Ryoba should work pretty well though.
I love wooden planes. Haven't tried a proper western style wooden plane, but I have a small kanna and a home-made block plane, and enjoy them both.
The harbor freight plane with the spokeshave adjuster, as people have recommended, will work. I have a similar one made by stanley, but, as a fair warning, I rather hate the adjustment mechanism. Prefer my wooden planes by far.
You should look around flea markets and antique stores. You can find some good deals on hand planes sometimes; be on the lookout for any stanleys, or any wood planes (though, they're hard to find in useable condition). Also look for things like auger bits and braces (the bits, by the way, are numbered. The numbers indicate the fraction of a 16th, so an "8" would be a 8/16th, or 1/2". I'm telling you this because it's information that I would have found helpful in the past
. Also, egg-beater drills, or gimlets could be nice.
A half round rasp and/or file is very useful. Also, a Shinto saw-rasp is quite handy.
Not tools, per se, but you might also consider making:
- A Bench, Bench Hooks, Shooting Board, Saw Horses
- Clamps
- A Mallet
- A Strop. MDF or Leather. Or, if you prefer, MDF and Leather! I like either, depending on how much I want to preserve the original geometry of the blade. I recommend the green compound (Chromium Oxide, I think it is?)