I agree with Bill. Restoration is tricky. Some hands-on experience will guide you. If you can find a local letterpress shop, museum, art/trade school, or letterpress/book arts community that has presses, they can be of immense help to you in learning what press you really enjoy and can use.
Also consider a larger press, these little ones are very sweet (I have one and am fond of it) but you won’t be able to do more than a small 1.5 – 2 inch size print, and that can become frustrating. A larger tabletop, restored press with fresh rollers will give you a better learning experience and more enjoyment.
-Dee