Hi All, Wonder if someone can teach this old dog some new tricks pleaze. Came, via the PC, not the mobile, across this site about loudspeaker design and it looks quiet interesting. https://www.skillshare.com/classes/...asics-and-enclosure-design-DIY-Audio/12633221 However all but the Intro lesson are rated as premium content. Now clicking on a lesson says its 0.73p to view, but does this mean per lesson or the whole series ? suspect the former. Looking on the Skillshare site it says you can view all content, not just this project, for $10 a month. Skillshare Online Classes - Android Apps on Google Play Now I have never paid for anything from Google Play, though do notice you can use paypal with them now. How safe is Google Play payment system, are there any traps to avoid and any experience of the Skillshare site, as good as they make out ? thanks.