I need help to upgrade and revamp an existing website.

I run a small woodwork workshop in what used to be called the Chocolate Factory in Wood Green, London N22, hence my business name The Chocolate Carpenter. The building has now changed its name to Artspace and consequently I need to find a new name, a logo, and an updated and revamped website (www.thechocolatecarpenter.co.uk). I would also like to offer payment facilities on the website. I am a pensioner on a VERY fixed income, and my little sole trader business makes an annual loss. I would like to reduce that loss as far as possible by dramatically improving my marketing performance which, I confess, has been lamentable to date. I really cannot effort to spend more than about £150 son this process, and I will need some hand holding and patient instruction.