Website Audit

The site has gone through many changes over recent years. I need an experienced web designer to audit my website thoroughly, fix all the problems, and make suggestions on improving visibility and Google rankings. I need some content added for a new service that I'm providing mental health first aid training. I also require a strong landing page and a calender/schedule to put future courses with a clear call to action and a payment gateway for payments from Paypal. The website is www.mikelawrence.co.uk. Please provide examples of your work, what you will need from me, and how long the project will take.