Its a real lot of work
I can help but its best to try to find all that you like then gather it up take note where it was installed or how its to be installed. Some of the d/l's come as update.zips but for the d1 only. those you have to open and move the apk yourself. I use root explorer to do this.
If it was my work Id try to make an theme of it. I didnt change any system settings except the png's for the settings widget. that I can share. but say facebook, twitter, pandora, googlevoice and other's can be found the inverted section under the droid1, but these apk's are interchangable when signed correctly they are easily installed just clicking on them. the one's like I do you have to manually paste them in either system/app or data/app.
Wish I could explain things better. gather things up then pm me if you have questions I'll get u started doing what I o then you can do anything just since you learning make alotof backups.
Ok here goes to install this you must have root explorer. and be rooted of course
download my edited apk and rename by removing the .zip from the end. once its on your sdcard in case you download via pc like I usually do. long press on the setttings.apk you just d/l'd and choose copy. Now back up from sdcard so you can go into system/app once in system app dont paste. on top right click the rw/ro button now scroll down to find the current settings.apk once you find it long press on it choose rename now just delete the last letter then hit enter the file will loose its icon which is what we want. now you can choose paste on the botton left of rootexplorer. Ok now long press on the file and choose permissions and set them to 6.4.4 i'll post a pic for those that dont know what that means.
now all thats left is to reboot then when phone boots up readd the widget to your homescreen. if it doesnt' work for you for some reason or other you can go rename the old one back. This method has worked for me on all phones.
I know this is a different app but thats waht 6.4.4 permisions looks like.
http://www.mediafire.com/file/94kkprihyxpjtez/Settings.apk.zip
This is the same method I used to replaced googlevoice. As for pandora twitter and facebook the inverted one's by thebowers in his section you can just click install in any file explorer so I recommend his for taht part