Squarespace Site Development

We are in the UK and have a website which is at [login to view URL] and would like to transfer it all to 'SquareSpace'. I need the ability to edit the website from any machine including my iPhone mac and PC. I have all the content and would really just value a company or someone setting up the templates and assisting in getting the change done. The present site works well and I made it with 'RapidWeaver' on my mac. The 'Squarespace' site is existing but needs work... There are four main areas for the site In house training from myself Other courses from associates A small amount of products we sell Free information for schools (in the free ideas section) lots of 'YouTube' links and things here The customer base is schools and children's centres and most people who use the site are not tech's and mainly women. The site would need to reflect this. It needs to be fun but with a professional look and easy navigation is crucial to this site. We are only a little business, not running a big IT budget can you help. Kind Regards Richard Hirstwood