I will demonstrate how to subset vector data using both attribute filtering and the selection set. For raster data, I will demonstrate subletting by using the extent of the display.
Both filtering and selection are presented in greater detail in the video, but for most purposes, this will do.

0:00 Introduction
0:57 The data used
1:28 The purpose
1:49 Subletting by filtering (What I want of my filter)
2:26 A first look at the attributes using the I tool
3:56 The filter layer tool
4:14 Filling in the SQL clause (using the IN operator)
5:55 Extending the condition using AND operator and greater than
7:24 Exporting the filtered dataset to a GeoPackage file.
8:11 Specifying the GeoPackage name and location
8:57 Setting the layer name (Table name)
9:39 Removing unused data layers
10:19 Using the selection set
11:06 Exporting Selected features
13:23 Filtering raster data by hiding the symbol value
15:05 Exporting a spatial subset of a raster layer.
16:06 General considerations when exporting raster data.
17:17 Setting the region of the raster layer to be export