Trying to set up new tablet

RCA Cambio W101 V2 2-in1 (detachable keyboard). Spent days trying to figure things out, found stuff by accident. Touch screen, I'm also using a touch "pen".

Can't figure out how to "drag" things
Can't move window by putting cursor at top edge
Can't size windows to fill screen. Can maximize them separately, but can't get it so all of them always come up full size. Got the cross with the 4 arrows and found out how to size it by only using arrow keys, but later ones won't come up full size.
Accidentally got my Google desktop shortcut, but can't figure out how to get it on the taskbar.

I'm not computer-smart, really confusing. RCA User Manual and youtube reviews not any help, mostly just showing where things are, etc. Have laptop with W8.1, tried to put W10 on so both are same, but it wouldn't 'take' (is the time up to change?). W10 seems like simple things are harder to figure out how to do than they were in W8.

Hi, thanks for the welcome (not first time here, but been a long time). Also, what is difference with "+Reply to Thread" vs "Quick Reply"?

Glad to see someone else that has same tablet. Being an "RCA" (oddball for a computer?), was worried nobody would know a thing about using it (but seemed good for the price when I bought it, so......)
Maybe this thing is defective, just doesn't do things the way you say.....

1. Drag/Drop - for example, my google dsktp shrtct - Can move it to another spot upon desktop (Sometimes...a box comes up asking if I want to "move here"....sometimes it does not)......but it wont go on to taskbar.
2. Push top edge of window - I do that, keep holding down, move finger or pen or cursor (using touchpad).....it wont move.
3. Using IE.....any windows I bring up wont come up full size even after going to trouble of moving all the sides with the arrow keys on one of them (after I get the cross).......when I move cursor to one of edges, the double arrow wont change the window size.
4. A "right click" on a desktop shortcut - the menu that comes up does not show "Pin to Taskbar" - I clicked on "send to" also to check that, it still does not have "Pin to Taskbar"

What a mess......am I "missing" something?

The tablet came with W10 home installed (I did mention in first post how I tried to put w10 onto my laptop so laptop would be same as tablet). I use a usb mouse with my W8.1 laptop, but want to use touchscreen/pad/pen with tablet for it being easier/more "compact" to do things, not needing a surface to use mouse upon, etc.

I think....... I recall I did put W10 on the laptop way back, but comp fouled up, had to reset it back to the way it came with 8.1, never got around to putting W10 back on again, so now stuck using 2 different OS. The time was up in July, guess that's why it wouldn't "take"?

Holy moly, RCA recovery? Damn, just bought it. I have had such problems and bad luck with computers. Got fed up with laptop, bought another one, an HP, direct from HP (current one is Acer). Many hours on phone with HP support, shipped back to HP twice. Told them I want refund, if not, I'd be smashing it with a hammer, and letting others know of incredible problems I had with HP (I was at first one week over their 30-day refund policy). They gave me option of HP store credit for full amount it cost me, or a 75% refund, I took the refund. Think Acer issues maybe due to it having been dropped on floor.

I guess the "pen" is a "stylus", looks like the picture....I thought they're often just called a "pen", just use it same as finger, moving it on the screen....isn't that a normal thing for touchscreens?

Almost positive I recall doing the free upgrade to W10 on laptop, remember printing out and going by the HTG article on doing it. I met all the requirements. But, when I just tried again, wouldn't go all way thru, but I can't remember now exactly what it said was the reason.