getting back on track with 23 things!

OK. I understand I am not going to get out of this - well it's not that I don't want to do it, it's just a matter of prioritising my time and just doing it! I now know how to 'extend my browser' and I am thrilled with that feature! That would save so much time every morning, just click on the coffee cup and it's all there. I have added plugins from the list that is supplied but am confused as to how I can add 'outside' plugins (one's that are not on the prescribed list). Am still not completely sure of what exactly constitutes a plugin, is it a search engine? How do I add other search engines? I am sure the answers will come ...one day. Summing up I have enjoyed learning about these new tricks. Moving on....