If you are interested in being an advisor you will have to Sign up. You will be signed in as guest while you wait for approval to be an advisor. You will be able see descriptions of available business plans you can advise.
You will be notified via email of your approval. You will be able to login and Claim a business plan that you would like to advise. When you claim a plan you will have access to download the business plan document.
Download the business plan and add your revisions, comments, and corrections. Then upload your revised copy of the business plan within five business days.