The best base material for interlocking paving stones is a hard, compactable surface that will provide a stable foundation. Some of the most popular choices include concrete, asphalt, and pavers. When installing interlocking paving stones, it's important to start with a level surface. If the ground is uneven, the pavers may not fit together properly and could become loose over time. Once the surface is prepared, begin by laying out the largest pavers first. Then fill in the spaces around them with the smaller pavers. Always make sure that all of the joints are tight and level before moving on to the next row.

There is no definitive answer to this question since each person's needs and preferences vary. However, a good base for interlocking typography is usually a sans-serif font such as Helvetica or Arial. These fonts have clean, stark lines that create a sharp contrast when used with other fonts, making them ideal for pairing with more elaborate typefaces. Additionally, using a sans-serif font as your base will help to keep your design looking modern and fresh.