This is a list of my suggestions and things to remember when installing Magento – I do not claim this is an all encompassing list but it is certainly something that may well save you some frustration in the long run!
1) Cache – Disable it!
There is nothing worse than adding extensions manually via FTP and for them not to work – the configuration cache is often the cause for this. Disable the cache log out and log back in and there you go – the extension is now available & working in the admin area!
2) Inventory – Stock Management
If you are selling products which you do not need to managing the stock for ensure you change the inventory under catalog > inventory > product stock options otherwise your products will all be out of stock.
more to come in the future…