Hello SusieQ,
In my opinion, the CB-1 is the perfect starter bike for anyone! I say that for the following reasons...
1- Its a 400, so in terms of power, its not as intimidating as 600 and above. If you get in trouble, not going to happen as quick as it would on a larger bike, theorhetically speaking...
2 - Its light weight. Actually most of todays sportbikes are about the same weight as the CB-1
3 - Its power band is very user friendly. THe CB-1 makes most of its power above 10,000 rpms.
4 - Its a great handling bike.
5 - Its small in size. I think you will find it a comfortable fit.
6 - Sounds like it is initially not going to cost you anything to acquire it! A huge plus!!!

7 - Its close to 20 yrs old, so insurance should be fairly cheap.
Sounds like you have a strong interest in motorcycles. The CB-1 is a great bike! You will not find a more knowledgable group of people with regards to the CB-1, than you will here! From qualified mechanics, shop owners, a few racers, amd many guys that have a passion for this bike! The CB-1 was my first bike. I was not a tool box kind of guy either, but I have learn a great deal working on my 1. Its a carburated bike, or as I like to call it, "old school", in the sense that you dont have fuss, for lack of a better word, with a fuel injected system.
If you want to do the work yourself, I say go for it! I am sure, that very soon, others will inform you of how to get ahold of a manual. Get it running and enjoy a great bike that very few people have had the pleasure of experiencing!