var client = new Client(new Settings()); //Define your own ISettings implementation
await _client.Login.DoGoogleLogin();
var inventory = await _client.Inventory.GetInventory();
var profile = await _client.Player.GetOwnProfile();
var playerStats = await _inventory.GetPlayerStats();
var settings = await _client.Download.GetSettings();
var mapObjects = await _client.Map.GetMapObjects();
var updateLocation = await _client.Player.UpdatePlayerLocation();
var encounter = await _client.Encounter.EncounterPokemon(encId, spawnId);
var catchPokemon = await _client.Encounter.CatchPokemon(pokemon.EncounterId, pokemon.SpawnPointId, pokeball)
var evolvePokemon = await _client.Inventory.EvolvePokemon(pokemonId);
var transfer = await _client.Inventory.TransferPokemon(pokemonId);
var recycle = await _client.Inventory.RecycleItem(item.ItemId, item.Count);
var useBerry = await _client.Encounter.UseCaptureItem(encounterId, ItemId.ItemRazzBerry, spawnPointId);
var fortInfo = await _client.Fort.GetFort(pokeStopId, pokeStopLatitude, pokeStopLongitude);
var fortSearch = await _client.Fort.SearchFort(pokeStopId, pokeStopLatitude, pokeStopLongitude);

and a lot more :)

You can visit Pokestops, encounter Pokemon (normal/lure/incense), catch Pokemon, drop items, use items and everything else :)