Originally Posted by zinzin
Yes, get a colour head even if you have no intention to print colour - it makes using VC paper easier as you can just dial in the filtering rather than inserting filters in a filter drawer.
Have a look on ebay.co.uk to see what is available. With luck you can get an enlarger capable of using up to 6x6cm and a reasonable lens for under a hundred quid - less if you are not in a hurry:
(http://cgi.ebay.co.uk/ws/eBayISAPI.d...849209473&rd=1 / http://cgi.ebay.co.uk/ws/eBayISAPI.d...850005213&rd=1 / http://cgi.ebay.co.uk/ws/eBayISAPI.d...851187336&rd=1
Those are auctions that finished in the last week. 35mm only enlargers are even cheaper.
Alternately, try MXV and Mr Cad etc but you will likely have to pay a little more. The 4x5 enlargers others mentioned are big, very heavy (as in requiring two people to lift safely) and relatively expensive (say £300 - £500) and it can be awkward to use titchy little 35mm negs in them...
Take a low stool in to the bathroom with you if you put the trays on a board over the bath - all that bending over is a pain in the neck (and the back, and the legs and the....).
Try putting the enlarger on a computer table - the kind with castors. Then you can put most of the rest of the bits and bobs on its shelves and roll the whole thing in and out easily. Alternately, you can get large castors or wheels to fit yourself from B&Q/Homebase etc if you can't find a suitable desk with them.
Your local library should have a coupe of suitable books, but if you are buying, any of the books sold by Silverprint for darkroom printing will do you nicely.