There are several free editing tools/apps you can use on your smart phone, tablet or computer/laptop!  Here's a few examples:

If you have an apple iPhone or iPad, you can use the Markup tool to initial or sign where indicated.  For a step by step guide, check out our other FAQ page article: https://eietrainingcentre.zohodesk.com/portal/en-gb/kb/articles/how-to-digitally-sign-your-registration-paperwork  

There's also a free app called Adobe Fill & Sign available for android or apple users. 

Or you can use a website like Small PDF.com to sign documents for free!