Thanks for catching that!

Cool idea (mapping the tracks). I thought I transferred the tags. Help me understand if I did this wrong. I thought I put the tags on the relation. Are you expecting them to be on the way? Looks like they are on the relation and the outer way.
Do you have a tool (besides overpass) to search for all of the tracks.

Looks like you are mapping the buildings and adding addresses. Wonderful! Here is a tip when adding buildings - after drawing the outline, right click on it and hit the Square menu option. That will make your corners 90 degrees. The keyboard shortcut is "Q".
Check out https://yosmhm.neis-one.org/ the next day to see a heatmap of the changes that you've made (for fun).

Suggestion...select the Esri World Imagery (Clarity) Beta as it is much clearer and you can get the sidewalks right on. You can select that by pressing the "B" key. I'm using that imagery as it is very good for the Cedar Rapids area.
Use crossings for when footpaths cross roads or railways, not when they cross each other.
You can see help on each tag by clicking on the lower case "i" to the right of the feature tag.
I'm happy to help answer questions if you have any. Enjoy mapping!

Welcome to mapping!
I have a couple of recommendations from my limited experience but if they don't make sense then let me know.
1. I see that you added a sidewalk. That's what we call it but the correct term (in British) is a footpath. A sidewalk is adjacent to a street while a footpath has a grass separator (much like we usually see in the States). Here is the wiki page on sidewalks: osm.wiki/Sidewalks
Here is a helpful line from that page: The simplest method is to tag the associated highway with sidewalk=both/left/right/no (none is also used synonymously to no) as appropriate for those sections of sidewalk that are parallel with the carriageway and to use highway=footway where the path diverges from the carriageway.
That's what I've seen other mappers do.
2. It looks like you are using Bing maps. Could I convince you to switch to using Esri World Imagery (Clarity) Beta? The main reason is that it is much clearer. The secondary reason is that I've done a bunch of mapping in the neighborhood where you added the sidewalk and the Bing's satellite image doesn't line up like Esri's does so we'll be stomping on each other.
You switch to the various satellite images by clicking on Background settings (or pressing "B") when in edit mode. You can see the list of different satellite images that you can use for reference. Sometimes I switch to other satellite images when in different towns or if a different image was taken during a different time of year (with less foliage), time of day or a slightly different angle.
Let me know if you have any questions. ;-)
- Mark

Crossroads United Methodist Church has two buildings (and two sheds) apparently from your import. I'm not sure if I should delete one of the duplicates but I don't know which duplicate to delete, if you even care or if I should be telling you so that you can look for other duplicates from this import. I could match it to the satellite image that I prefer but I don't know if your import had more accurate data. Thoughts?

Crossroads United Methodist Church ended up with a duplicate church building and shed. I didn't know if I should just fix it or if I should tell you since it was a (somewhat recent) building import. I also don't know if I should trust the satellite or your import. Thoughts?
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Published using OSMCha: https://osmcha.mapbox.com/changesets/68740992

I'm no ferry expert but I don't think they can be highway=secondary. This makes them roads which they aren't. Why change from route=ferry? Look at route=ferry

Ha! My last name is "Holt" and my hands accidentally typed it instead of "hole". I just fixed it. Thanks for finding that.