This step will explain how to solder, the following steps will not as it is all the same. If you have never soldered pipe before I suggest practicing beforehand and watching some youtube videos. {link to many vids}

1) Prep for soldering by sanding the inside of the 1" and top 3/4" connection of one Tee. Also sand the top end of your 1" pipe and about 6 inches down on your 3/4" pipe so that it lines up with the 3/4" top mouth of the Tee. *Sanding provides a rough surface for solder to hold on to.

2) Apply a generous amount of flux to all sanded areas prepped in step 1

3) Slide the 1" mouth of the Tee all the way down into the prepped side of the 1" pipe

4) Put 1" pipe section in vice, DO NOT hold the pipe even with gloves. It's too hot and you'll need both hands anyways.

5) Unwind about 10" of solder wire, put on your safety glasses and gloves, open the torch valve and ignite the flame

6) Heat the joint with your torch

7) Once the flux looks like it has melted away and fumes are coming out the end of the pipe, apply a line of solder to the joint, the solder should melt then quickly lay flat at the joint, this means you are at a high enough temperature and the flux is "sucking" the solder into your joint. If not, then keep heating and try again.

8) keep applying heat and solder the entire 360 degree joint

9) let the section cool, it is very hot even if it doesn't look it

Now once the Tee and 1" pipe cools to the touch slide the 1" pipe and Tee over the 3/4" pipe so that the outer 1" pipe is in the center of the 3/4" pipe. The flux from the 3/4" top Tee opening will smear but that's fine, just apply more around the joint and then solder held in a vice as similar to above. you should end up with the third picture of this step.