How To Install Blogger Templates
Before installing a new template, please back up any widgets you have in your sidebar / footer. Installing a new template erases these! An easy way to do it is to copy & paste Code and JavaScript into a Word/Text doc and then paste it back in once you have installed your new template.
Log into your Blogger → Layout
Go to Layout → Edit Html
You can backup old code your templates before install new blogger templates
For Install new blogger templates you must click button Browse and find code or Xml templates you download → after done click button Upload
If you upload code without extension .XML blogger templates you must find another blogger templates because another code not .XML blogger templates not work
I hope before you upload new blogger templates for you blog, please backup Code JavaScript your widget and other important code on your old templates
Click "Save" to process change new theme. Once your new template is installed you can re-add your widgets. See the changes on you blog
Setting Undefined Date And Time
If you ever get Undefined Date And Time you must do something with setting timestamp format
If way above is not successful you must contact Author templates or Customer Service because each templates with different code for settings timestamp format.
How To Edit Menu My Templates
Go to ( Dashboard → Layout → Edit HTML → Expand Template Widget ) Find this code on your templates and you can edit link on these menu or remove that if you not want add menu.
<li class='current'><a expr:href='data:blog.homepageUrl'>Home</a></li>
<li><a expr:href='data:blog.homepageUrl + "feeds/posts/default"'>Posts RSS</a></li>
<li><a expr:href='data:blog.homepageUrl + "feeds/comments/default"'>Comments RSS</a></li>
<li><a href='#'>Edit</a></li>
To add menu again on your templates you can ( Add Widget → HTML And JavaScript → Add Code On Top Again ) and put these code on old place you find.
Many modern templates now with Pages and if you have problem about delete that widget you can contact custumer service or leave message on that templates in my site.