Jonathan - I used Photobucket at first, hated it, now only load through the galleries. Very easy, here you go:
1. Sign In
2. Click "Gallery" in the top bar (doesn't matter which page you're on, that bar is always there)
3. Now over on the right side click "Upload Photos"
4. Then …
5. Then …
That should be it, very easy and no need to host photos elsewhere.