My business plan is simple, start with windows,frames and doors and build up the round then think about gutters etc at a later stage, but looking online every windy is offering things from solar to pressure washing etc. Should I look at those things now or just stick to doing the windows while I'm still learning. I was thinking about website promotion etc. but feel it could be to soon as all I can offer is a window cleaning service. Any advice would be appreciated, thanks.