Ok, new guy here, but I thought I'd share something.
I use C:Geo on my smartphone to do caching, and not brilliant for GPS, but I cope with it. I'm still very new to it, and I've not yet worked out half the things people have mentioned 'PQ' ? 'GPX' ? I might be young but I prefer sitting down and learning things from others.
Going on the topic, C:Geo does actually tell me where PMO caches are, right down to centermetres on my phone, but as a basic member, I won't pay for a hobby I want as cheap as possible, but getting the most out of it. I haven't claimed a single PMO, because of own morals, I leave those for people who have paid for it.