Hi Louise, and welcome to the site
As the others have said, the MS Trust do some excellent publications about everything to do with MS. The MS Society do too. They can be downloaded from both websites for free and you can order hard copies for free too.
Please warn your husband (and keep in mind yourself!) that MS is massively variable. That means that the info booklets have to cover all the different possible symptoms - you will NOT get everything, and some of the symptoms you do get you may get only mildly.
As far as fatigue goes, you may find that it improves a lot once you go into remission from this current relapse. Unfortunately, fatigue is a really common symptom in MS though (I think it's about 85% of MSers who get it) so it may be something that you have to learn to manage. There are a couple of drugs that can help: modafinil and amantadine. Unfortunately, modafinil is hard to get these days, but it would be worth asking your MS nurse if you can try something if you find the fatigue continues once other symptoms have improved. When my fatigue is bad (e.g. during a relapse), I rest as much as possible, mainly because I can't do anything else(!). When it settles to more normal levels, I find that sleeping too much is not helpful. It's important to try and keep to a good sleep routine so that you still sleep well at night - too much sleep during the day throws everything out and adds to fatigue.
Exercise is good for fatigue too: MSers who begin to exercise regularly find their fatigue levels improve. So when you are feeling more up to it (don't exercise when your fatigue is bad), try getting into a routine of doing something. Make sure that you don't exhaust yourself, keep well hydrated and avoid overheating. You might find that your symptoms get worse when you exercise - don't worry; it's normal and it will get better once you cool down.
Couple of "housekeeping" bits for you: you need to tell the DVLA about your diagnosis and you should check any policies you have that might have a critical illness clause (e.g. your mortgage) because MS is a claimable condition.