How to Read the Character Sheet:
Let's take the example of Publius Sulpicius Galba Maximus, and the Suplicia Gens from left to right;
Patrician, the Sulpicia are descended from one or more of the original 100 Senators of the Roman Kingdom appointed by Romulus, this inherited mantle makes them a Patrician family, which comes with prestige and a heavily weighted vote in the Assemblies, but prohibits them from presence in the Plebeian assembly or running for Plebeian office.
Publius Sulpicius Galba Maximus, this name follows a Roman naming convention, it means that Publius is a member of gens Sulpicius and carries the inherited cognomen of Galbae, think of this as a cadet branch of the Sulpicia family. Finally, for heroics in the Second Punic War, Publius earned the honorific title of “Maximus”, literally, “the Greatest”.
Annus Natalis 254, means that Publius was born in 254 BCE. The Romans, obviously, did not use BC/BCE, but this is convenient and doesn’t require us to do annoying math.
Aetas just means age, Gaius is 53.
Sen. marks whether the character is a member of the Roman Senate, an X means they are a Senator, no mark means that they are not. An O in this column signals that the character is in a different political assembly (Usually, this means they’re a member of the College of Pontiffs - Religion). Publius is a Senator.
Senate, this box would mark if the family has any incumbent members of government, the Sulpicia do not have any incumbents at this time.
Cursus Honorum, this box shows the high magistrates of the Republic, what offices are left to be conquered for our citizens, and what they have on their resume. Romans climb a specific ladder of offices, from Quaestor [Qu] (Or optionally Tribune of the Plebs [Tr] for a Plebeian), to Aedile [Ae], then Praetor [Pr] then Consul [Co]. There also lies the optional, prestigious office of Censor [Ce], and the rarely used, and recently undermined office of Dictator [Di], and their deputy, Master of Horse [Me]. An X in any box here symbolizes that said citizen must’ve held said office at some point, we're just not sure when; a number is the year that said Roman held said office, and a ? symbolizes that the citizen is eligible to run for that office in the next election, effectively, that is the next office for them to seek on the Cursus Honorum.
Publius Sulpicius Galba Maximus, a Patrician of Sulpicia Gens, carries the Cognomen Galbae, and the honorific title of Maximus - the greatest - he was born in 254 BCE, making him aged 53, and has served as Quaestor, Aedile, Praetor, Consul (211 BCE) and even Dictator (203 BCE).
How to read the Senatus Romanus:
This page of the spreadsheet is a simple reference for the current makeup of the Roman Senate, it shows the current incumbent Consuls, Praetors, Aediles and Quaestors, as well as the slightly less notable positions such as Princeps Senatus (Elected for life to always speak first in the speaking order; usually given to long-time veterans, but currently in the hands of Scipio Africanus as one of his many bounties for saving the republic). Or the Pontifex Maximus, the chief religious official in Rome.
Here we see the Vigintsexviri, a collection of minor administrators throughout the Republic, and the College of Pontiffs. Both will be further elaborated in a religion guide, but for now see it as a minor title that can be sought out that is not required to climb the Cursus Honorum.
On this sheet, we see a rather complex display of current land holdings by family, by state. Simply put, income in the game is organized by the amount of property a family owns. Importantly, the Republic is left with a considerable amount of reorganization and land delegation now that the Second Punic War has ended. First, they must organize the lands won in Hispania between Roman families, veterans, and the people. Second, several of the Samnite allies in Southern Italy rebelled against Rome during the Second Punic War, and they have had their lands confiscated, as such the Republic must redistributed, between the State, Latin settlers (to keep watch on the local tribes), and what will remain with the locals.