MOZ have got a fantastic 'Beginners Guide' to Google Analytics which you should follow and implement
Learn what Google Analytics is, how it works, how to get started, and what information it provides.
moz.com
If that is still too much for you then you could install the Jetpack plugin in Wordpress which would give you at least a basic level of information about your stats and then you could go from there.
In terms of your blog generally, you've got some FANTASTIC posts on in your Focus ON feature about the different charities that if you did some SEO on could rank really well.
What you need to grasp is 'keywords'
So if you take for example this post of yours
THE LONGEST RUNNING FUNDRAISING WEEK IN THE UK For the more observant and attentive among you, it will not have escaped your notice that this coming Sunday (
charityshophoppingandotherthings.co.uk
If you went after the keyword 'Christian Aid' that's quite a broad term and you would struggle to rank well I think because the first page of Google at the very least would be that charity and other larger websites.
However if you went for the keyword for any of these long tail keywords (How does Christian Aid raise money is a good one) they have a lot less competition and a decent volume of 880 searches on Google.co.uk a month) and you would rank far higher when people search for the query in question (just make sure if you focus on one of these keywords that you focus on answering the question as that's why people are there!)