By double tapping on the map, you can quickly enable/disable the functionality as well. With that option enabled, you can drag the map with your finger to navigate, you can pinch to zoom in and out, and you can tap and hold to set a marker on the map. When using a touch-enabled device, an extra option for enabling/disabling touchscreen control will appear below the map. The "Save Map" button allows you to save the currently shown map as png image file. You can always remove and add the marker by double clicking on the map. The lower inputs allow you to go to a specific point (e.g., your base) of the map and set a marker there.
You can use the slider below the map or your mousewheel for zooming.
To scroll, use your arrow keys while your mouse cursor points at the map, or move your mouse while holding down the left mouse button. Chunkbase is a great free website where you can get free Minecraft apps, mods & tutorials for free through which you can enhance the look & feel. Once you entered your seed and version you can start using the map. The app does this the same way Minecraft does, so it's safe to use letters (and other characters) as well. If you type in anything else (like letters), it will be converted to a number. You should also know that a seed is always a number (up to around 20 digits). When loading a seed from a level, the seed will automatically be stored as a level. Levels allow you to store and reuse seeds on this website, without having to load your savegame every time.
On Windows you can use %appdata%\.minecraft\saves to get to that folder.
You can find the savegames in the saves folder of your Minecraft installation. Level.dat is a small file located in the folder of every Minecraft savegame. The latter can be done by clicking on "Load from Save." and selecting your level.dat, or by drag&dropping the level.dat file into your browser window.
In SMP, you can use the same command if you have sufficient rights. Alternatively, you can use the /seed command ingame. If you're playing SSP, the app is able to fetch the seed from your savegame. You can either type it in manually, or you can load it from your savegame. For technical reasons, you need to know the seed of your world to use Biome Finder, unless, of course, you want to find a seed for a new world. 4 aug 0 0 Minecratt 1.19.1 abrics 167 fes T: 1168 veynefancy fancey-chlouds GPU: Integrated server ms ticks, 11 tx, LTE rx WW: 1624, 465 E: 73,46,465 Chunks] W: 2484 73,73,46,625,625,6,0 ninecrattthe_end FC: Ave: 926.031 62.6600 -1512.652 Block: -921 62 -1513 Chunk: -58 -95 06 1 in r.-2.-3.mcea] Facing: north (Towards negative 0175.7 245) Client Light: sky, block? CH 61 MM: 61 SH 5: 61 0: 61 M: 61 ML: 61 Biome: minecrattend_highlands Local Difficulty: 1.66 (Day Java: 17.6.3 64bit Allocation rate: "s Direct Buffers: +5,241 MiB Allocated: 6144ME Off-Heap: +241N6 CPU: InteltAd CorecTM? CPU 3.86GHz Display: (NVIDIA Corporation) MVIDIA GeForce ATA S.2.6 MWIDIA 516.59 Sodium Fenderer Chunk arena allocator: ASTHC Device buffer objects: 24 Device memory: MiB Staging buffer: Mapped Hoisefouter T: V: C: E: 6.368 D: W: PY: -1808 AS: -8.884 N: SC: 269, 4: 72,0: 8, A: 8, A: U: B, Sounds: + (Mood CIris] Shadow Naps: half plane = 126.8 meters Targeted Block: -922, 61, -1517 ninecrattend_stone #minecrattsculk_replaceable #minecrattmineablespickaxe Iris] Shadow Distance Terrain: 126.4 blocks (set by shader packs Entity: 126.4 blocks (set by shadetminecrattdragon_immune Iris] Shadow Culling Terrain: Advanced Frustum Culling enabled Entity: Advanced Frustninetrathsouth eeplaceable_world_gen Iris] Shadow Terrain: C: Iris] Shadow Entities: Iris] Shadow Block Entities: Targeted Fluid: -922, 61, -i5i17 ninecrattempty Iris] Shadow Entity Batching: 16 draw calls 18 render types = 100.0% effective CEntity Batching] 17 draw calls 17 render types = effective Debua: Fie Cshittl: hidden FPS + TPS Caltl: hidden Iris] Version: 1.2.6 CIris] Shaderpack: GSL_w8.1.83.The first thing you should do is select a seed and version.