WordPress attracts many DIYers because it’s powerful, well-documented, and very user friendly. This is a great testament for people with high hopes for WordPress and is a great way to learn more about the software. However, most DIY efforts are wrong. People often find mistakes taking over a DIY effort expecting it to work but results in a very different manner.
Here we lists some of the worst mistakes someone new to WordPress are likely to make. These mistake have been committed many times specially by DIY beginners and oftentimes done by seasoned professionals themselves.
Here’s the list: http://wpshout.com/classic-diy-wordpress-mistakes/