The screens shown in these two courses seem to be slightly different to what is in the current Odoo 12 demo database.
Some of the options shown for an asset account seem not to be available (Create Asset & Asset Model). Instead you directly select the asset category on the Vendor Bill. Also, the smart button is not shown on the Vendor Bill, but the asset is created and the depreciation is correct.
Similar differences for deferred revenue, except that the "prorata temporis" option seems not to be available here.
Is this a configuration difference or a new version of the app? Is there any documentation?