READ ME FIRST: Rules & FAQ for the Recording Course!

Ronald Wow, that is true dedication here!  See you later

Vilio Celli If you're on a Mac I'd recommend using Reaper, since there will be - among basic principles and concepts - a lot of Reaper-specific details like routing your signals and editing. But as it's free to use, it won't hurt to take a look at different workflos (and it's free to use and generally a real cool DAW).

However, if you use an iPad your workflow will be different, especially in terms of editing and routing (and since I've used the iPad in a professional production I cannot tell you too much about it).

Vilio Celli yeah, good choice! See you later

Peter oooh, I am sorry, I have almost never used passive speakers with power amps, so I cannot recommend anything in particular! (only in my very early student days when my dad gave me his old stereo system and a record player, felt pretty cool to play old vinyls through that system).

For recording purposes, it's generally better to use headphones anyway to avoid feedback noise (considering you are recording yourself with all the equipment in one room). When it comes to mixing on the other hand, having a fine pair of monitor speakers is definitely a plus.

Peter awesome, see you later!  

Barry The Zoom H6 is a fantastic device, you can switch it into "audio interface mode" and use it like any professional grade recording system! Afterwards, you can directly record onto your hard drive and start immediately with editing in Reaper.
We will cover the basics of video editing in the 5th lesson of the recording course and will use "DaVinci Resolve" by Blackmagic Design, wich is free to use if you don't record in 4k!  

Lawrence I'd probably just use good graphic tuner, I know that woodwind player are practicing their intonation like that. Going through your DAW and a heavy lifting pitch correction plugin is probably much of a workaround for something so essential. 
Btw., this is especially hard when practicing chords, I only know one piece of software that can display the individual notes withing in a chord, and that's "Melodyne Studio" by Celemony and costs 700€ (i actually used a trial version to correct an oboe line in an orchestral piece, it's crazy how far technology as come!!).

Lawrence If you can use that device as an audio interface, then you definitely can learn something using it in conjunction with Reaper! The workflow is very different, you can use your mobile recorder just for recording without a laptop or computer, but when you want to edit your recordings, you need to import them first. Within a DAW you can record directly onto your harddrive (of the Philips audio recorder is actually capable to act as an audio interface, I don't know that).

Lars Kjøller-Hansen I have a pair of Audio Technica 4051b (bought one pre-owned and one new) and I am very happy with those, I regularly use those as spot microphones for guitar (in fact, I use one all the time for my live streams). Neumann Mics are of course very detailed and transparend, some see them as the gold standard of cardioid microphones, but I heard they tend to be a bit sharp on guitar in close distance (I haven't used them so mich, only on piano and violine where they sounded fantastic). I heard very good opinions on the AKG 451s in terms of the panorama image. So at this price range, you will get great microphones. They Neumanns are probably those that will resell at the best price, since it is a brand known for their long-term reliability.
I use my pair of AKG C414 usually for recording voices (because the wide cardioid setting is thickening a male voice in such a pleasant way!). I just used them yesterday on guitar because I could show different polar patterns with these, although I have used them on guitar recordings as well. Oh, and Thomas Viloteau is recording himself with a stereo matched pair of C414 as well, so if you want to know the sound of these, listen to his latest releases!