Driving - google maps. I will download the map and directions ahead of time, both to save data and in case I’m in an area with no cell service. If I’m going really far off the beaten path, away from towns and gas stations then I’ll have a paper map too. I always have a car charger as well as a portable charger so running out of phone battery isn’t an issue.
*Sometimes I don’t use the directions, preferring to just use the google map to plot my own route this is important. Google maps is...a map. If you don’t trust its directions you can still use it as a map, with GPS.
Walking - if I need to get point A to B quickly I’ll do the same as above. Google maps walking directions. However, I prefer to just open my downloaded map (CityMaps2Go) and see my blue dot - where I am - and my destination and just find my way there. I will check in with the map to see that I’m heading the right way occasionally but just kind of wander towards my destination. More fun, and a good way to explore the town. I set up my map ahead of my trip with points of interest marked so I can, for example, make a detour to a shop/restaurant/sight I see that I’m near.
DEFINITELY no paper maps for walking in cities/towns. Pulling them out is a hassle and looks very conspicuous. I will use Rick Steves guidebook maps in the kindle version.
Electronic maps are great but zoom out! It’s really helpful to get the overview of the whole route before zooming into street by street. I call it a “mental map” and its knowing broadly where things are in relation to each other.
Also use common sense - don’t be one of those people who drive into a swamp because google guided them incorrectly. If the step by step directions are wrong you can still use the map as a map, with the added feature of real time GPS.