a decent mic

Since its an explanation video you should focus on audio first.  You can either go shotgun mic or lav mic.  If its indoor and just talking on a table then you don't need to go for the expensive ones.  You could even use both since 2 recordings are safer.  In case one fails.  You don't want to be talking for an hour and then realized the mic failed to record.  You can look at Takstar or Azden for budget mics.  Rode, Tascam, Zoom, Shure, Senheizer etc.  are also good brands to look at. 

Headphones - and maybe other audio monitoring gears to test out the audio to make sure it sounds great.  Always useful to test things out before going on to talk for minutes.

Tripods to angle everything nicely.  If its indoor at home then again you don't need expensive ones.

You don't need to buy a background as long as your background is not super ugly and distracting.

2 light setup - for a more pro look.  You could also go with a ring light.  Just as long as your face is lit up nicely should be fine. 

laptop with cable to connect to camera.  Tethering them together.  So you can see and monitor what is being recorded while you are talking.  You can also buy external monitor for this duty also.  If your camera has a flip screen then you can skip this.

2nd camera - You want the more pro look the 2nd camera for a 2nd angle makes things look more pro.  Maybe even a 3rd one.  Professional talk shows always change angles and zoom in and out. 

Always depends how pro you want it to look.  But the first priority for explanation video should be audio.  Your audio sucks people will easily lose interest in listening to you.

would this style of video be sufficient? https://www.youtube.com/user/hahnzraver

Han_ETG

and if that condenser mic can be directed into one point should be fine.

make sure to just try it out a lot and u have to be aware of background noises

On camera mic is alright but it's also very sensitive. for my case, it records my breathing.

Here's the audio recording on my EOS 60D.



I'm speaking into the mic.

If you're standing in FRONT of the mic then the reception would be a problem, the mic is located at the side of the camera body.

As for lighting, cheapest way is just to use basic lights (like those from Ikea) and have your white balance adjusted according.

If you're willing to spend more then you can purchase a few LED + adapter + stand. That sets you back quite a fair bit, budget yourself at least RM 1k.