Best of luck with the seeds...keep us posted with photos.
To soak or not to soak the seeds?
It depends on the local conditions - and time will tell.
For now, under my local conditions, seeds planted in early October don't get soaked. But large seeds, like walnuts, almonds and apricots, placed after New Years, get soaked. I am concerned that there may not be enough moisture to stratify the seeds.
This year, the first full fall rains came late October - the window to plant narrows !!!
As far as land to plant, there is plenty...if you are in a city... abandoned/unused lots is one option, roadway embankments not maintained (make sure that when trees grow and produce fruits that they don't fall and interfere with the safety on the roadways).
If you are in the country...there is plenty of unused public land.
By planting this way, we are not investing a lot in time or money. In 15 minutes you can plant over 50 seeds that can cost less than a dollar/euro (or whatever) or are free to collect/save.
The returns are amazing...an oak tree for hundreds of years will provide shade, acorns etc. - an apple tree for 100 years will provide food !!!
There are very few things a person can do, that will have such a positive impact long after he/she is gone.
It's odd, but sometimes it may take 3 or 4 years before a piece of land will start growing trees. We need to be aware of this and not be discouraged.
Plant for others not just for yourself. The reward of seeing a hungry, tired person enjoy freely available fruits or nuts cannot be described.