Can you tell me the steps to do each thing?
On the Labor/Work Details tab, DFHack adds a little popup that shows its added keys. Ctrl+e to Save work details, Ctrl+i to Load work details, Ctrl+a to toggle automatically Load for new embarks.
For the Stocks window, DFHack adds a little popup that shows its added keys. Ctrl+x collapses all of the individual items into their item types.
For buildings and constructions, DFHack has an automatic replacement for the normal selection window. It's called the Planner.
By default, it lets you choose materials by categories (like any type of wood or any type of stone) or drill down to item types (like pear wood or marble). You do that with the f key to edit filter.
There's directions on the screen, you can click categories or item types with the mouse, or use hotkeys to select/deselect categories, or use the up/down arrow and enter to select/deselect item types, or type a word (like almond or shale) to filter the item type list.
The chosen materials are 'sticky' for each building type or construction type, so you don't have to e.g. re-enter them for every wall you build.
In addition, there is a Global settings tab that lets you choose what classes of items to include in the lists. If you never want to build out of boulders, for example, you can turn boulders off.
Once you get to know it, it's pretty simple.