Adventure is an ambitious first game!
My first was Hitchhiker's Guide to the Galaxy. Found it very
challenging -- but been hooked since so can't say that's a bad thing!
For accurate maps use graph paper.
Make notes when you find an interesting object or something locked.
My advice for your next game is **Planetfall** (Infocom classic).
It is a true masterpiece. Very well-written, thoroughly enjoyable, it
is the best of IF even after all these years.
If you dig Infocom play these shorter more recent worsk:
Babel by Ian Finley
The Plant by Michael J. Roberts
Glowgrass by Nate Cull
And finally, The Gostak by Carl Muckenhoupt is a must-play game - it
Download these at http://ifdb.tads.org/