Minecraft is fun! (Duh!) When you delve into the nether you might consider using it for "fast travel" in the overworld. The scale of the nether makes each step ~8 steps in the overworld. One trick though: You might need to pair your gates. That's what this calculator is for.
Once, I built a portal from my home at XYZ and stepped through to appear in someone else's gate room. Ok fine, but when I stepped back through, it was in a "room" that had been blown up by a creeper, it was dark, and I didn't recognize anything. So, while panicking, I scrambled around trying to avoid phantoms and angry mob babies, then fell into a chasm while trying to find my gate again! And died.
What I learned to do was find my XYZ coordinates while building my gate and carry cobblestone, 10 obsidian, and flint with me to build a return gate (if needed). When I step through to the nether, if the gate is new, I build a quick enclosure around it to avoid getting attacked or burned up by lava flows or a fall. Then I check my XYZ to see if I need to explore to different XYZ to build my own return portal.
I tend to do this even in worlds where I'm alone, so I can find my gates when I'm mapping overworld places to my nether-highway ( ...er, hmm).
Thanks for your visit, I hope this helps you. If you find any errors or have suggestions, please let me know.