Carrie Anne’s been wanting to learn to solder for a while. She’s now learnt how to do it and has made this great video that teaches you which end of the soldering iron is which and how to make good solder joints. Watch it below. If you haven’t subscribed to the Geek Gurl Diaries YouTube channel, you should – it’s a great way for beginners (and non-beginners!) to learn about gadget and tech stuff.