I am a novice to web hosting and have found myself in the position of being unable to edit the site home page. I log in to my site and it brings up my home page but does not bring up the edit mode. Could someone help me with this matter
If the edit toolbar is visible on other pages but NOT the home page chances are something on the home page is "breaking" the display of it...
Follow johnpaul's approach to get to the dashboard and then navigate to full sitemap, click on the home page and select versions. Try reverting to an older version of the page and see if this brings back your edit bar!!
Have you recently added any third party script into your home page? If so, just follow @enlil's instruction and revert back to previous version. Actually Concrete5 default have a jquery library and if any third party script tries to load the jquery library again, it conflicts and break the edit bar.
Note: If this happens in all the pages, then you might need to check your themes footer.php whether it includes