Reading and writing Latvian starts from a real head start for English speakers: it uses the same Latin alphabet and left-to-right direction English does, with a small, learnable set of added diacritics rather than an entirely new writing system.
Because Latvian is read left to right in the Latin alphabet, the biggest early adjustment is simply recognizing the macron (ā, ē, ī, ū) and caron (č, š, ž) marks and what sound each represents — see Latvian Alphabet for the full breakdown. There's no new stroke direction or letter-connection system to learn, unlike Arabic's cursive script.
Because Latvian spelling is close to phonetic, reading a new word aloud correctly on first sight is realistic far earlier than in English — the letters do consistently what they're supposed to do.
For English speakers specifically, yes — Latvian uses the same Latin alphabet and left-to-right direction, with added diacritics rather than an entirely different writing system.
Yes — a macron marks a genuinely different (longer) vowel sound, and omitting it can change or obscure a word's meaning, not just its spelling.
Largely yes, thanks to Latvian's close-to-phonetic spelling — far more reliably than with English's inconsistent letter-to-sound correspondence.
Tarc's lessons focus on reading, listening, and recognition through interactive exercises; the same vocabulary and diacritics are reinforced through spaced repetition as you progress.
See also: Latvian Alphabet · Latvian Pronunciation · Learn Latvian